Summit Feature: No feature: pasture note: ground 50m W at SN 73779 34015 is as high; ground 8m SSW of trig at SN 73902 33888 is 0.1m lower
Classification: Hill Trigpoint, Clem, Hump, P30 Tump.
OS Grid Ref: SN738340 (10 figure Grid Ref: SN7382934009).
UK Area: 31 - South-West Wales (OS Maps 1:50k 146,160. 1:25k OL12W,187S.)
Latitude: 51.99017, Longitude: -3.83891, Height: 244.4 metres (802 feet)
Prominence: 107 metres (351 feet)
Unique Waypoint POI Name: 0244.p (DoBIH Hill ID: 5244)
Associated Parent Hill:
Crugiau Merched (462m, p205)
Associated Trigpoint:
TP0688 'Black Wood' Grid Ref: SN7390433992 Separation: 77m from Hill grid ref.
External Links for Allt Ddu:
-GeoHack link...
-OS Map Bing link...
-Google Map link...
-Geograph link...
-Allt Ddu on hill-bagging.co.uk...
-Black Wood on trigpointinguk.com...
Data courtesy of the Database of British and Irish Hills
Selected mapping: Google or Bing / Ordnance Survey
:All | :Nearby Hill | :Nearby Trigpoint | : mouseover
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Penlanblaen-nos (1.4km)Allt Rhiw'r-hwch Isaf (1.6km)Cefnbenydd (2.4km)Pen Llwyn-celyn (2.6km)Cefnrhyddan (2.8km)Penlan (2.8km)Allt Troed-y-rhiw (3.1km)Cefn-yr-allt (3.3km)Banc Bwlchdrebannau (3.7km)Banc Cae-glas (3.7km)
Adrian Andrew Brown Areluctant-triggeR board Carole Chalky1953 Christina Lander Colin Crawford Des Taylor iaindbrown jonglew oakesave RDK rhw stevent0809
Total = 1 All
Data courtesy of the Database of British and Irish Hills